Using Output buffer

[Lassie]

I have a page that I want to output  xml rss data.

I have used output buffering but still get header already sent error.

I tried changing the logic so that page output was at the end but that esulted in no xml.

Can anyone advise how to organise this code to avoid the problem.

<?php
ob_start();
/*
Template Name: Feed
*/
?>
<?php get_header();?>
<div id="leftnav">

<?php include (TEMPLATEPATH . '/sidebar1.php'); ?>

<div id="right_pan">
</div>
</div>

<div id="rightnav">
<?php include (TEMPLATEPATH . '/sidebar2.php'); ?>
</div>

<div id="content">

<p>
New Submissions Feed
</p>
<?php
require_once '../Pos/RssFeed.php';
require_once '../Pos/MysqlImprovedConnection.php';
require_once '../Pos/MysqlImprovedResult.php';

try {
  $xml = new Pos_RssFeed('localhost', 'xxxx', 'xxxx', 'xxxx');
  $xml->setFeedTitle('Authorbank New Submissions');
  $xml->setFeedLink('http://www.example.com/oop_news.xml');
  $xml->setFeedDescription('New Authors and New writing for Publishers.');
  $xml->setLastBuildDate(true);
  // $xml->setFilePath('oop_news.xml');
  $xml->setItemTitle('WorkingTitle');
  $xml->setItemDescription('BriefDescription');
  $xml->setItemPubDate('updated');
  $xml->setTable('book');
  $xml->setItemLinkURL('http://www.example.com/detail.php');
//  $xml->setItemLink('url');
  $result = $xml->generateXML();

   if ($result) {
     ob_end_flush();
    header('Content-Type: text/xml');
    
echo $result;
  }
  else {
    echo 'Error';
  }
}
catch (Exception $e) {
  echo $e->getMessage();
}

?> 

</div>
<?php get_footer();?>

[Adam]

You're sending a header straight after you flush the buffer:

 

     ob_end_flush();
    header('Content-Type: text/xml');

[haku]

And this is a bad usage of the output buffer anyways. You should re-structure your code so you don't need it. All it's doing is masking the flaws in your structural logic.

[Lassie]

Thanks. I have tried restructuring the code but when I do my xml is not generated.

The page is a custom wordpress page that has to use a template at the top of the script.

If i dont include the the page cant be found it seems.

I have also tried just echo out to the browser but again this fails.

I know the buffer idea is lazy but i cant see anther way.

Would you have any more pointers please.

[PFMaBiSmAd]

You cannot output an XML header and XML data on a web page that already has output HTML. A page/document must be one type or the other other. Output buffering cannot solve this problem.

 

If you are trying to output an XML document when you browse to the page that contains the code you posted, you must only output the XML header and the XML data. If you are trying to make a link in the HTML on that page that when clicked takes you to the XML page, you need to create a separate page/url that only outputs the XML header and XML data.

[Lassie]

Ok thanks I will work on that.